Nuclear energy

Which type of radioactive decay shown in the equation?

• alpha decay

• beta decay

• gamma decay

Which nuclear process is shown in the diagram?

• Nuclear reaction

• Radioactive decay

• Nuclear fusion

• Nuclear fission

Define nuclear fusion.

• a loss of mass in nuclear reaction

• a loss of energy in nuclear reaction

• the combining of two lighter nuclei to form a heavier nucleus

• the splitting of a heavy nucleus into two lighter nuclei

The equation shows the nuclear fission of

Uranium-235.

What are the values of P and Q?

• 143 , 36

• 140 , 33

• 141 , 36

• 141 , 33

The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?

• 0.25g

• 0.5g

• 0.75g

• 1g

What is the Half life of this isotope?

• 10

• 20

• 40

• 50